Request password

How add YouTube playlist?

No work (www.youtube.com/playlist?):
[video]https://www.youtube.com/playlist?list=PLMK2xMz5H5ZuPzp5FfEIDjeYavpyRgpcb[/video]
No work (www.youtube.com/embed/videoseries):
[video]https://www.youtube.com/embed/videoseries?list=PLMK2xMz5H5ZuPzp5FfEIDjeYavpyRgpcb&amp;showinfo=0[/video]

Work (youtu.be/embed/videoseries?):
[video]https://youtu.be/embed/videoseries?list=PLMK2xMz5H5ZuPzp5FfEIDjeYavpyRgpcb&amp;showinfo=0[/video]